Ozzy, if i may add my personal opinion.
Soil, especially FFOF, which ive got plenty of experience with tends to dry up and make it difficult for even penetration of solution without flooding it.
Coco, which has a better mix of air/nutrient/water ratios, has become my fav way of cloning with this method.
FFOF is just a super water retaining bag of one week fertilizer, that sure enough does its job, but once its been tapped is nothing more than a pain in the but imo.
Coco, which im noticing amongst more and more growers, is quickly making its way into homes of the best and worst growers.
It doesnt need to really be mixed with perlite, it dries and retains a much better ratio of air/solution, and it absorbs water like a sponge, even absorption means less solution needed. FF tends to form a crust that appears to actually repel water if you dont keep it somewhat moist.
You can rub your hands in it forever and it washes off as if it were plastic, and vacuums nicely to boot. Easy also for beneficials to thrive as it is an organic material as well.